2. Mats Hummels
Bayern Munich must be kicking themselves for selling Hummels to arch-rivals Borussia Dortmund. Since quitting Bayern, Hummels has emerged as one of the best center backs in the world.
The 25-year-old is also capable of operating as a defensive midfielder which will come as a blessing to Manchester United who have been leaking goals this season. Hummels also has brilliant attacking capabilities making him a threat to the opposition.
The Germany international was an important player in his country’s Euro 2012 campaign and is expected to be heavily involved in this years World Cup. The defender’s price will soar after the World Cup but he will be worth every penny in Moyes decides to buy him.